Improvement in the manufacture of iron and steel



NITED STATES PATENT OFFICE.

ANSON G. COOK, OF BURLINGTON, VERMONT.

IMPROVEMENT IN THE MANUFACTURE OF IRON AND STEEL.

Specification forming part of Letters Patent No. 166,4 54, dated August10, 1875; application filed May 13, 1875.

To all whom it may concern:

Be it known that I, ANsoN G. 000K, of the city of Burlington, in thecounty of Ghittenden and State of Vermont, have invented a new anduseful Metallic Compound, the composition and manufacture of which arefully set forth in the following specification.

My invention consists in combining certain grades of pig-iron, steel,and wrought-iron, in the proportions hereinafter named, by which a newproduct is obtained possessing nearly all the properties of steel.

Nothing new is claimed in the process by which these elements arecombined so as to form a homogeneous metal. It is essentially setforthin prior patents of the United States already granted me, to wit, No.52,684, dated February 20, 1866, for an improvement in cupolas orblast-furnaces, and No. 62,819, dated March 12, 1867, for an apparatusfor rectifying or refining iron.

The formula which I use, but which may be slightly varied, as occasionmay demand, is as follows To every six hundred pounds of gray iron,commonly known as N o. 1 iron, add from five to eight hundred pounds ofwhite iron, known as No. 6 iron, and two hundred pounds of Scotch iron,and upon this place one hundred pounds of steel and fifty or more poundsof wrought-iron. This mass is placed upon the coal-bed of my cupola orblast-furnace, and when thoroughly fused and in proper condition, isdrawn into my refiner. By this process the necessary elements which areessential to great strength, toughness, and hardness of the iron,required to be used, are thoroughly developed and become absorbed andassimilated by the above mixture, and the result is an iron combining,in its elements, the greatest elasticity, strength, and durability, andpossessing a surface susceptible of the highest polish.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A metal composed of gray or No. 1 iron, white or No. 6 iron, Scotchiron, steel, and wrought iron combined, in about the proportions andsubstantially as described.

ANSON G. 000K. Witnesses:

Rrcrmnn W. J ONES, W. M. DESPARD.

